All categories

4 years ago

The proper factors of 28 is??

Mathematics

2 answers:

Sever21 [200]4 years ago

8 0

I believe the proper factors of 28 are 1,2,4,7,14,28
Because:
1*28 = 28
2*14 = 28
4*7 = 28
~I hope this helped!~

Naya [18.7K]4 years ago

4 0

28= 4*7
4*7= 2*2*7
28=2*2*7

You might be interested in

Is 0.0530 greater than 0.04?

SashulF [63]

Answer:

yes

Step-by-step explanation:

0.04 is equal to 0.0400

0.0530

0.0400

5 is higher than 4

5 0

3 years ago

Read 2 more answers

Which of the following are equivalent ratios? 15 to 20 6 to 8 8 to 12 9 to 12

I am Lyosha [343]

So yuo simplyfly

15:20=3:4

6:8=3:4

8:12=2:3

9:12=3:4

so your answer is not c

3 0

3 years ago

Read 2 more answers

Which statement must be true

ExtremeBDS [4]

Answer:

Its A

Step-by-step explanation:

6 0

3 years ago

Gnoma [55]

Answer:

where is the figure

pls send it

4 0

2 years ago

Hey, can you guys help me out with this question? I need the workings too.( find the surface area )

Ilia_Sergeevich [38]

▪︎Side 15 cm, 18 cm and x cm form a right angle triangle.

We know that :

$=\tt {hypotenuse}^{2} = {leg}^{2} + {leg}^{2}$

Which means :

$=\tt {15}^{2} + {x}^{2} = {18}^{2}$

$=\tt 225 + {x}^{2} = 324$

$=\tt {x}^{2} = 324 - 225$

$= \tt {x}^{2} = 99$

$\color{plum} =\tt x = 9.9 \: cm$

Thus, x (radius) = 9.9 cm

We know that :

$\color{hotpink}\tt \: Surface \: area \: of \: cone \color{plum}=\pi r(r + \sqrt{ {h}^{2} + {r}^{2} }$

Then, the surface area of this cone :

$= \tt3.14 \times 9.9 \times( 9.9 + \sqrt{ {15}^{2} + {9.9}^{2} } )$

$=\tt 3.14 \times 9.9 \times( 9.9 + \sqrt{323.01} )$

$=\tt 3.14 \times 9.9 \times (9.9 + 18)$

$=\tt 3.14 \times 9.9 \times 27.9$

$= \tt31.09 \times 27.9$

$\color{plum} =\tt\bold{ 867.4 \: cm}$

Therefore, the surface area of this cone = 867.4 cm

5 0

3 years ago